8 Answers
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popopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopopo
Source(s): 39 years as linguist -
Difficult to give a definitive answer, because chemical formulae are part of the English language, and the compounds keep getting longer the more scientists learn.
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Depends on what you consider a word. There are technical words that are just chains or suffixes for scientific names. The longest regular, coined dictionary word is
hippopotomonstrosesquipedalian
means having to do with long words
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Elastic
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I would guess it’s: supercalifragilisticexpialidocious
Don’t know if it has any real meaning or use outside of the Mary Poppins movie though.
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newswardic and ostentatious
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antidisestablishmentarianism
Go look it up if you don’t believe me
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floccinaucinihilipilification
